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ci: bump typing-extensions test pin to 4.16.0 - #3928
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anyio 4.15.0 (2026-09-02) imports typing_extensions.sentinel, which only exists from typing-extensions 4.16.0. The agent-os and agent-mesh test jobs install the package (resolving typing-extensions 4.16.0), then install requirements/ci-test.txt, whose 4.15.0 pin downgrades it. Every test module that imports fastapi then fails at collection with ImportError: cannot import name 'sentinel'. CI on main has been red on test (agent-os, 3.11-3.13) and test (agent-mesh, 3.11-3.13) since 2026-09-08 for this reason. Raise the pin to 4.16.0 (hash from PyPI) and note why next to it. Signed-off-by: MohammadHaroonAbuomar <40180927+MohammadHaroonAbuomar@users.noreply.github.com>
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MohammadHaroonAbuomar
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September 13, 2026 16:50
This was referenced Sep 13, 2026
Karim Mehalebi (karimad)
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Sep 14, 2026
anyio 4.15.0 (2026-09-02) imports typing_extensions.sentinel, which only exists from typing-extensions 4.16.0. The agent-os and agent-mesh test jobs install the package (resolving typing-extensions 4.16.0), then install requirements/ci-test.txt, whose 4.15.0 pin downgrades it. Every test module that imports fastapi then fails at collection with ImportError: cannot import name 'sentinel'. CI on main has been red on test (agent-os, 3.11-3.13) and test (agent-mesh, 3.11-3.13) since 2026-09-08 for this reason. Raise the pin to 4.16.0 (hash from PyPI) and note why next to it. Signed-off-by: MohammadHaroonAbuomar <40180927+MohammadHaroonAbuomar@users.noreply.github.com>
Yuvraj Singh (yuvrajsingh2428)
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Oct 1, 2026
anyio 4.15.0 (2026-09-02) imports typing_extensions.sentinel, which only exists from typing-extensions 4.16.0. The agent-os and agent-mesh test jobs install the package (resolving typing-extensions 4.16.0), then install requirements/ci-test.txt, whose 4.15.0 pin downgrades it. Every test module that imports fastapi then fails at collection with ImportError: cannot import name 'sentinel'. CI on main has been red on test (agent-os, 3.11-3.13) and test (agent-mesh, 3.11-3.13) since 2026-09-08 for this reason. Raise the pin to 4.16.0 (hash from PyPI) and note why next to it. Signed-off-by: MohammadHaroonAbuomar <40180927+MohammadHaroonAbuomar@users.noreply.github.com> Signed-off-by: yuvrajsingh2428 <offcyuvi2428@gmail.com>
MinYi Xie (ppcvote)
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Oct 4, 2026
anyio>=4.15 imports typing_extensions.sentinel, which only exists from typing-extensions 4.16.0. The integration install resolves 4.16.0, but the hash-pinned ci-test.txt step then downgrades it to 4.15.0, so importing openai-agents (via mcp -> anyio) fails at test collection in test-integrations (openai-agents-trust). Mirrors upstream microsoft#3928. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Related Issue
None. Splits the one-line CI fix out of #3919 so it can land on its own.
Problem & Solution
Problem: CI on
mainhas failedtest (agent-os, 3.11–3.13)andtest (agent-mesh, 3.11–3.13)on every run since 2026-09-08. anyio 4.15.0 (released 2026-09-02) importstyping_extensions.sentinel, which exists only from typing-extensions 4.16.0. The test jobs install the package (resolving 4.16.0) and then installrequirements/ci-test.txt, whosetyping-extensions==4.15.0pin downgrades it. Every test module that imports fastapi fails at collection:Solution: raise the pin to 4.16.0 with the PyPI wheel hash, and leave a comment explaining the constraint.
Impact on Your Work
Unblocks CI for every open PR and for the dependabot lane (15 routine PRs are held only by this failure).
Timeline
None
Alternatives Considered
Pin
anyio<4.15in agent-os and agent-mesh: rejected, it caps a runtime dependency to work around a test-only constraints file.Type of Change
Package(s) Affected
Testing
Unit Testing
N/A, pin change only.
Manual Testing
pip install --require-hashes -r agent-governance-python/requirements/ci-test.txtinto a scratch target installs 4.16.0 andtyping_extensions.sentinelresolves.import anyio.abcsucceeds.typing_extensions-4.16.0-py3-none-any.whl.Checklist
Attribution & Prior Art
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